Figures F1-F23
Tables
T1-T3
F1. Basalt clasts with variably palagonitized glass in a matrix of calcareous sediment.
F2. A complex plagioclase phenocryst.
F3. Sieve texture in plagioclase.
F4. A glomerocryst of plagioclase and olivine.
F5. Carbonate-cemented basalt breccia with two generations of calcite.
F6. Minor smectite and Fe oxyhydroxide replacement of groundmass in basalt.
F7. Partly iddingsitized olivine phenocryst.
F8. Crosscutting relations between first- and second-generation calcite.
F9. Highly altered basalt and first-generation calcite clasts in matrix of second-generation calcite.
F10. Three clast types in a second-generation calcite matrix.
F11. Perpendicular calcite veins with alteration halos.
F12. Iron-stained plagioclase phenocryst.
F13. Alteration of groundmass to smectite and Fe oxyhydroxide.
F14. Transition from partial smectite and Fe oxyhydroxide groundmass replacement to unaltered groundmass at an alteration halo boundary.
F15. Relative abundances of basalt, pink micritic calcite, and light gray micritic calcite in breccia.
F16. Breccia fragments can be fitted together in places.
F17. Plot of fracture + vein density.
F18. Photos of Cores 187-1156A-2R and 3R.
F19. Seismic profile crossing the general location of Site 1156.
F20. Part of the track of the JR PDR west-to-east survey line S4.
F21. Major element compositions vs. MgO of basalts from Holes 1156A and 1156B.
F22. Trace element compositions vs. MgO of basalts from Holes 1156A and 1156B.
F23. Variations of Zr/Ba vs. Ba and Na2O/TiO2 vs. MgO for Hole 1156A and 1156B glass and whole rocks.
T1. Coring summary, Site 1156.
T2. Rock samples for cultures, DNA analysis, SEM/TEM, and contamination studies.
T3. Compositions of basalts, Site 1156.
